" am not surprised that the president has engaged in unconstitutional behavior. His healthcare law was unconstitutional. His war with Libya was unconstitutional … this president has become a president who is prone to lawless and unconstitutional behavior."

He went on to chastise members of the majority party in the Senate for refusing to stand up to the President in favor of the checks and balances established by the Constitution.

I ask today is there not one Senator from across the aisle who will stand up against this unconstitutional power grab? Is there not one Senator from across the aisle who will say to the President, that these illegal appointments set a terrible precedent? That these appointments will encourage a lawlessness, that these appointments eviscerate the advise and consent clause of the Constitution?

I ask my colleagues from across the aisle, where is your concern for the checks and balances? Where is your concern for the Constitution?

In addition, Senator Paul's office announced in a press release his intention to file an amicus curiae brief supporting the National Right to Work Foundation's lawsuit against Obama's appointments to the NLRB.

WASHINGTON, D.C. – Today, Sen. Rand Paul announced he will submit an amicus brief supporting a recent lawsuit filed by the National Right to Work Foundation (NRTW), the National Federation of Independent Business (NFIB) and others, challenging the legality of President Barack Obama’s recess appointments to the National Labor Relations Board and Consumer Financial Protection Bureau. Sen. Paul released the following statement following the court challenge:

“With the recent recess appointments, President Obama has circumvented our Constitution and showed complete disregard for the separation of powers. He has demonstrated once again that he is willing to treat the office of the Presidency like a dictatorship,” Sen. Paul said.

“I intend to file an amicus brief and join the NRTW, the NFIB, and others in a lawsuit challenging the constitutionality of President Obama’s appointments,” Sen. Paul concluded.